DAMAGE REPORT "INFORS AG MOD. AK-85 SHAKER", 7 March 2014

About this document

Issued by O.M., 7 March 2014

Equipment

Manufacturer: INFORS HT
- Rittergasse 27
  CH - 4103 Bottmingen/Basel
  Switzerland
email: info@infors-ht.com
Local representative: Tamro MedLab, from 2007 OneMed Norge
- Telefon kundeservice: 2230 9130
- Email: bestilling.no@onemed.com

PCB NO. HT 19355, 50024A , REV. A

Motor driver components overheated. Via hole on PCB burnt => some traces on the PCB might be damaged.

Measurements

Measured motor windings on 12-way connector:

  Counting from left (referring to picture below):

  Resistance between 1 (red) and 2 (red), to high-wattage resistor mounted separately near motor assembly: 472 ohm
      --- " ---      3 (black) and  4 (red): 193 ohm
      --- " ---      5 (black) and  6 (red): 193 ohm
      --- " ---      7 (black) and  8 (red)  193 ohm
      --- " ---      9 (black) and 10 (red): 193 ohm
      --- " ---     11 (black) and 12 (red): 192 ohm

  Measured from all 12 positions to chassis ground: OK, no leakage.

  Measured from each motor pair to the other pairs: OK, no leakage.

CONCLUSION: Motors and wiring seems to be OK. The 12-way connector should be replaced - looks worn-out.